Predicting phosphorus availability to spring barley ( Hordeum vulgare ) in agricultural soils of Scandinavia

Mundus, Simon; Carstensen, Andreas; Husted, Søren

doi:10.1016/j.fcr.2017.06.026

Cited by 20 publications

(10 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They attributed this result to the limited pot volume in relation to shoot biomass in their study. In our pot experiment, the ratio of shoot biomass (straw + grain: 13.7 to 26.5 g per pot) to soil volume (10.9 L) was lower than in the study of Mundus et al (2017), but still exceeded the threshold of 1 g dry matter per L soil, above Figure 2. Phosphorus (P) extracted by different extraction methods compared to plant P uptake in the pot experiment (means and standard deviation; n = 50).…”

Section: Resultsmentioning

confidence: 95%

“…For example, most of the studied soils were beyond the critical P concentrations determined by Mehlich 3, Olsen and resin P (the latter is comparable to our cation and anion exchange membranes (CAEM)) for maize yield in a variety of soil types from Iowa, USA (Mallarino and Atia 2005) and also beyond the critical P concentrations based on CaCl 2 , Olsen and oxalate in a recent study including several long-term P-response field trials across Europe (Nawara et al 2017). On the other hand, Mundus et al (2017) reported relatively poor correlations between P extracted by different soil test methods including Olsen and dry matter yield of spring barley in a pot experiment with mainly P deficient soils of Scandinavia. They attributed this result to the limited pot volume in relation to shoot biomass in their study.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Correlation of extractable soil phosphorus (P) with plant P uptake: 14 extraction methods applied to 50 agricultural soils from Central Europe

Zehetner¹,

Wuenscher²,

Peticzka³

et al. 2018

PLANT SOIL ENVIRON

View full text Add to dashboard Cite

The aim of this study was to test different soil phosphorus (P) extraction methods in relation to plant P uptake. A greenhouse pot experiment was conducted with spring wheat. The soils were extracted with the following methods/extractants: H2O, CaCl2, LiCl, iron oxide impregnated filter papers (Fe-oxide Pi), Olsen, calcium-acetate-lactate (CAL), cation and anion exchange membranes (CAEM), Mehlich 3, Bray and Kurtz II (Bray II), citrate-bicarbonate-dithionite, organic P, HCl, acid ammonium oxalate, total P. Plant P uptake was in the range of the P extracted by neutral salt solutions (CaCl2, LiCl). P extracted with H2O, CaCl2 and CAEM correlated best with plant P uptake over one growing season, while several established soil P test methods, including CAL, Mehlich 3 and Bray II, did not show significant correlations. When grouping the soils according to pH, the weaker extraction methods (H2O, CaCl2, LiCl) showed significant correlations with plant P uptake only for the low and intermediate pH groups (pH in 1 mol/L KCl ≤ 6.6), while some of the stronger extraction methods (CAL, Mehlich 3, Bray II, dithionite, oxalate, total P) showed significant correlations only for the high pH group (> 6.6) comprised of calcareous soils. It was concluded that weaker P extraction methods, especially neutral salt solutions best predict plant-available P in the short term. However, they do not perform well for calcareous (and clayey) soils and do not account for P that may become available beyond one growing season.

show abstract

Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Correlation of extractable soil phosphorus (P) with plant P uptake: 14 extraction methods applied to 50 agricultural soils from Central Europe

Zehetner¹,

Wuenscher²,

Peticzka³

et al. 2018

PLANT SOIL ENVIRON

View full text Add to dashboard Cite

show abstract

“…The limitation in the phosphorus availability may lead to serious damages to the vegetable metabolism. Usually, the low concentration of P in the soil solution, in comparison to the demand of the plant for the nutrient, induces the diffusive process, in which the nutrient is exhausted in the region near the root and through diffusion, the plant is able to meet its demand (Mundus et al, 2017). It is possible that, during this initial phase, the effective length of the roots is more influenced by the reserve of the seeds that ensures the viability of the seedlings.…”

Section: Resultsmentioning

confidence: 99%

Urochloa brizantha Interference in the Phaseolus vulgaris Radicular System Fertilized with Phosphorus

et al. 2019

View full text Add to dashboard Cite

Interference between root systems occurs below the ground surface long before the competition between plants is expressed in the shoot. Nutrients stand out for being limited in the soil, requiring supplementation, especially phosphorus. Thus, this study aimed at estimating, from sowing, visual characteristics in the root systems of bean plants from the Carioca variety (Phaseolus vulgaris) when in competition with brachiaria (Urochloa brizantha), considering also the application of phosphorus P2O5. A factorial design with six treatments was used resulting from the combination of three cultivation schemes (beans in isolated crops or in competition with one or two brachiaria plants), and the application or not of phosphate fertilizer (90 kg ha-1 of P2O5), in a completely randomized design with four replications. After the sowing of the species, the visualization results were taken at every 12 hours, by means of the photographic record of the development of the root system in rhizotrons. Greater growth and greater total area of the root system were observed in bean monocultures and when competing with one brachiaria plant in the presence of phosphate fertilization. In contrast, the bean plant in the container with two brachiaria plants invested its resources in greater length and total area of the root system when in the absence of the fertilizer. It can be stated that there is evidence of interference starting three days after the sowing of the species.

show abstract

“…For example, it was reported that the DGT P result was highly correlated to the maize P uptake in a pot experiment corresponding to an application of sewage sludge-based P fertilizer [21], and to that of wheat [22]. DGT also showed great accuracy in predicting the barley leaf P concentrations in both pot and field experiments [23].…”

Section: Introductionmentioning

confidence: 98%

How Air-Drying Affects DGT P Results in Calcareous Soils

Zhang

Wang

Tan

et al. 2019

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

Diffusive gradients in thin films (DGT) technology has been increasingly proved to be a promising tool for accurately predicting plant-available phosphorus (P) in soil using air-dried samples. However, the effects of the air-drying process on DGT-measured P are unknown compared to those of using moist samples in which plant roots survive throughout a growing season. We investigated the differences between the Olsen P and DGT P values in 58 air-dried and moist soil samples. The results showed that the discrepancy in the DGT P values between air-dried and moist samples increased with an increase in the organic P concentration in soils. It was presumed that the air-drying process converted some easily mineralized organic P into its inorganic form, thereby allowing it to be measured by the DGT method. The DGT P values in moist samples can be calculated from the values obtained in air-dried samples using the following equation:. However, the Olsen P values were highly correlated (R 2 = 0.95) when using air-dried and moist samples, although significant differences were observed. We concluded that the effects of air-drying on predicting soil available P using the Olsen P method can be neglected due to the high correlation relationship. The availability of easily mineralized organic P needs to be further explored.

show abstract

Predicting phosphorus availability to spring barley ( Hordeum vulgare ) in agricultural soils of Scandinavia

Cited by 20 publications

References 43 publications

Correlation of extractable soil phosphorus (P) with plant P uptake: 14 extraction methods applied to 50 agricultural soils from Central Europe

Correlation of extractable soil phosphorus (P) with plant P uptake: 14 extraction methods applied to 50 agricultural soils from Central Europe

Urochloa brizantha Interference in the Phaseolus vulgaris Radicular System Fertilized with Phosphorus

How Air-Drying Affects DGT P Results in Calcareous Soils

Contact Info

Product

Resources

About